If you’re in Texas, odds are you’re paying more for car insurance than the average U.S. driver, says a survey by Insure.com.

I ran the survey’s data through Google Fusion Tables to see a bigger picture, and it turns out costs are as varied as the nation’s landscape itself. In particular, extreme highs touch all three coasts as well as the Canadian and Mexican borders.

Hover over states to see average costs. The darker the shade, the higher the cost.

Reasons for the undulating costs are, literally, all over the map, from claim-happy and disaster-prone Louisiana and bumper-to-bumper traffic in Georgia, to slow-poke drivers in Iowa and strict teen-driving laws in Maine, according to Insure.com.

The survey looked at 2013 cars and settled on a typical guy with a clean record and good credit. Texas rolled in at $1,545, ranking 19th overall.

Texas joined 19 other states and D.C. to rank higher than the $1,510 national average. Louisiana tops the list with $2,699. Maine sits at the bottom with $934.

Here are the top 10. Again, use hover to see dollars. The full table’s here.